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> gen3 3sgte vsv picture please (or pinout)
post Jan 25, 2013 - 2:02 AM
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match220



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Can some either take a picture of their vsv pinout (what color the wires are on each pin), or post a pinout of it? I'm thinking it doesn't matter which wire does on which side because it might open or close either way, but I would rather be sure. On the gen3, I believe it's mounted on the right of the TB if you are looking at it from the front of the car.

Also, there is a threaded hole in my manifold large enough to stick my thumb into. It is also on the right of the TB and a little down. What is this for? EGR? I'm not running EGR since I have an aftermarket computer, so I just want to plug it. I'll post a pic of the hole later on if someone needs to see it.


--------------------
-Jay

95 GT conv. project car: Manual, Gen III 3sgte, JN pisons, Eagle rods, overbore, crank knife-edged, crank scraper, ARP head/main/flywheel, Autronic EMS, Haltech Dual Wideband O2 controller, Audi 1.8T individual coils, FMIC and SSQV BOV, 3" downpipe, 3" ultra-high-flow cat, 2.5" Borla muffler, +other
01 S2000: FMIC, Haltech EMS, Haltech wideband, 570cc inj, forged pistons/rods, sleeved block, 5 angle valve job, ported and polished
02 R6, all stock, except for braided stainless brake lines, frame sliders, and adjustable brake/clutch leve
 
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post Feb 3, 2013 - 7:38 PM
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pitcelica

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You want the IAT/MAT sensor mounted as close to the intake valve as possible, but you do not want it to be heat soaked when idling. There is a compromise to be done. I suppose that Toyota was using the Air Intake Temp sensor (located in the air cleaner) when heat soaked conditions were met and when the MAT sensor wasn't giving the real temp value. Using two sensors was a way to go around this problem. Unfortunately, a lot (if not all) of standalone ECU can't calculate fuel needs using two different IAT/MAT sensors.

Also, because compressing air cause a raise in intake temp, you want the intake air temp sensor mounted somewhere between the outlet of the intercooler and the intake valve. You said you have mounted it in the air intake cleaner which isn't really a good idea because you do not have any way to know the real temp of the air entering the engine.
post Feb 3, 2013 - 8:02 PM
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match220



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QUOTE (pitcelica @ Feb 3, 2013 - 2:38 PM) *
You want the IAT/MAT sensor mounted as close to the intake valve as possible, but you do not want it to be heat soaked when idling. There is a compromise to be done. I suppose that Toyota was using the Air Intake Temp sensor (located in the air cleaner) when heat soaked conditions were met and when the MAT sensor wasn't giving the real temp value. Using two sensors was a way to go around this problem. Unfortunately, a lot (if not all) of standalone ECU can't calculate fuel needs using two different IAT/MAT sensors.

Also, because compressing air cause a raise in intake temp, you want the intake air temp sensor mounted somewhere between the outlet of the intercooler and the intake valve. You said you have mounted it in the air intake cleaner which isn't really a good idea because you do not have any way to know the real temp of the air entering the engine.


my intake tubing where I'm going to mount it later is almost right beside my air filter. The way I see it it's bad either way being on the intake mani (heat soaked) or in the air filter (pre charge). My main thing is getting it running right now so I can move it from where it is and keep it at my house, there are still a ton of little things to be done to it. I'll have a bung welded to my piping eventually as I mentioned above, the spot I've picked is far enough away from the engine to stay cool, and conveniently right beside the air filter where it is now.


--------------------
-Jay

95 GT conv. project car: Manual, Gen III 3sgte, JN pisons, Eagle rods, overbore, crank knife-edged, crank scraper, ARP head/main/flywheel, Autronic EMS, Haltech Dual Wideband O2 controller, Audi 1.8T individual coils, FMIC and SSQV BOV, 3" downpipe, 3" ultra-high-flow cat, 2.5" Borla muffler, +other
01 S2000: FMIC, Haltech EMS, Haltech wideband, 570cc inj, forged pistons/rods, sleeved block, 5 angle valve job, ported and polished
02 R6, all stock, except for braided stainless brake lines, frame sliders, and adjustable brake/clutch leve

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